CharacteristicsofmacrozoobenthoscommunityinTianjincoastalseaareainsummerfrom2015to2019LIZhao1，DINGYe1，BIANShaowei2，HANLong2，LIUXihui1，YANGKai1（1.ChinaNationalEnvironmentalMonitoringCentre，Beijin100012，China；2.TianjinEco-EnvironmentalMonitoringCentre，Tianjin300191，China）Abstract：Themacrozoobenthoscommunitywasinvestigatedat10stationsinTianjincoastalseaareainSummerfrom2015to2019.Thecharacteristicsofthecommunitywasanalyzed，andtheinfluenceofenvironmentonthecommunitywasexplored.Atotalof100macrozoobenthosspecieswerecollectedinTianjincoastalseaarea.Theaverageabundanceofmacrozoobenthosrangedfrom23.3ind/m2to330.0ind/m2，andtheaveragebiomassrangedfrom30.2g/m2to313.0g/m2.ThedominantspeciesincludedProtankyrabidentata，Musculistasenhousei，Potamocorbulalaevis，Scapharcasubcrenata，RingiculadoliarisandNassariussuccinctus.Shannon-Wienerindex，PielouindexandMargalefindexofmacrozoobenthosincreasedgenerallyandhadsamechangingtrendinsummerfrom2015to2019，whichdemonstratedthatthewaterpollutionintheseaareahasbeenimprovedyearbyyear.Canonicalcorrespondenceanalysiswasadoptedtostudytheinfluenceofenvironmentalfactorsonmacrozoobenthoscommunity.Theresultsshowedthatwaterdepth，Chl-acontentandpHvaluewerethemainenvironmentalfactorsthataffectedthechangeofmacrozoobenthoscommunityinTianjincoastalseaarea.Keywords：Tianjin；coastalseaarea；macrozoobenthos；community；biodiversity天津近岸海域2015—2019年夏季大型底栖动物的群落特征李曌1，丁页1，卞少伟2，韩龙2，刘喜惠1，杨凯1（1.中国环境监测总站，北京100012；2.天津市生态环境监测中心，天津300191）摘要：2015—2019年夏季对天津近岸海域10个点位开展大型底栖动物的采样调查，分析其群落特征，并探究环境对群落特征的影响.结果显示：本次调查共采集鉴定了大型底栖动物100种；调查海域大型底栖动物的平均密度变化范围为23.3～330.0个/m2，平均生物量变化范围为30.2～313.0g/m2；优势种主要为棘刺锚参（Protankyrabidentata）、凸壳肌蛤（Musculistasenhousei）、光滑河篮蛤（Potamocorbulalaevis）、毛蚶（Scapharcasubcrenata）、耳口露齿螺（Ringiculadoliaris）、红带织纹螺（Nassari...
